was talking about thunderstorms up in the sierra that could bring down heavy rains. >> and by chance, if you're heading out that way, maybe to do some camping, that's going to be the case, at least through tonight. a flash flood watch for parts of the sierra. giving you a look there at what we have outside our door. more of the same, the clouds, the fog, burning off in the afternoon. marathon already underway in san francisco. if you're out to maybe help support, or the post race celebration, lasting until 1:00 this afternoon, mostly cloudy skies. the winds light this morning, but will tick up from time to time, 10 to 15 miles per hour. and temperatures upper 50s, to low 60s, about all we're going to see by about 1:00 or so for san francisco. afternoon highs, san francisco, 65 degrees. low 70s for oakland, hayward, mid-70s in freemont. 75 in santa rosa.